TPC12HM3/86A Equivalent & Substitute Parts

Part Overview

The TPC12HM3/86A is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is designed for transient overvoltage protection in automotive applications, featuring a 9.72V reverse standoff voltage and 17.3V maximum clamping voltage with 86.7A peak pulse current capability. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

TPC12HM3/86A

Vishay General Semiconductor - Diodes DivisionIn Stock: 1172TPC12HM3/86A Datasheet

Current PartRFQ

TPC12AHM3_A/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 1109TPC12AHM3_A/H Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TPC12HM3/86A is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Reverse standoff voltage within acceptable tolerance of 9.72V
• Clamping voltage performance at rated peak pulse current
• Peak pulse current capability of 86.7A minimum
• Peak pulse power dissipation of 1500W
• Operating temperature range of -65°C to 185°C

Mechanical & Packaging Criteria:

• Surface mount configuration
• TO-277 / 3-PowerDFN package footprint
• Unidirectional zener diode topology

Compliance & Quality Criteria:

• Automotive grade classification
• AEC-Q101 qualification
• ROHS3 compliance
• MSL 1 rating

The substitute part TPC12AHM3_A/H meets all substitution criteria through identical package geometry, equivalent electrical performance within specified tolerances, matching automotive qualification, and active product status ensuring continued availability.

Parameter Comparison

Engineering Selection Recommendations

The TPC12AHM3_A/H is a direct substitute for the obsolete TPC12HM3/86A based on the following factors:

Product Status: The substitute part maintains active product status with Vishay, ensuring long-term availability and supply chain continuity compared to the obsolete main part.

Compliance & Certification: Both parts carry identical automotive grade classification and AEC-Q101 qualification, meeting the same reliability and quality standards required for automotive applications. ROHS3 compliance is maintained across both parts.

Electrical Performance: The substitute part delivers equivalent transient suppression performance with marginally improved peak pulse current capability (89.8A versus 86.7A) and slightly lower clamping voltage (16.7V versus 17.3V), both favorable characteristics for overvoltage protection circuits.

Package Compatibility: Identical TO-277 / 3-PowerDFN surface mount package ensures direct PCB footprint compatibility without layout modifications.

Moisture Sensitivity: Both parts maintain MSL 1 rating, indicating unlimited shelf life and no special moisture control requirements during storage or handling.

Frequently Asked Questions (FAQ)

Q: Can TPC12AHM3_A/H be used as a direct replacement for TPC12HM3/86A without circuit modifications?

A: Yes. Both parts share identical package geometry (TO-277 / 3-PowerDFN), operating temperature range (-65°C to 185°C), and peak pulse power rating (1500W). The electrical parameters are within acceptable substitution tolerances for TVS diode applications.

Q: What are the key electrical differences between these parts?

A: The substitute part exhibits a 0.48V higher reverse standoff voltage (10.2V vs 9.72V), a 0.6V lower clamping voltage (16.7V vs 17.3V), and 3.1A higher peak pulse current capability (89.8A vs 86.7A). These variations remain within the functional operating envelope for transient suppression circuits.

Q: Are both parts qualified for automotive applications?

A: Yes. Both the TPC12HM3/86A and TPC12AHM3_A/H carry automotive grade classification and AEC-Q101 qualification, meeting automotive reliability and quality standards.

Q: Does the packaging differ between these parts?

A: No. Both parts use identical TO-277 / 3-PowerDFN surface mount packages with the same footprint and pinout configuration.

Q: What is the advantage of selecting the substitute part?

A: The TPC12AHM3_A/H maintains active product status, ensuring continued availability and supply chain support. The obsolete status of the main part creates long-term sourcing risk.

Q: Are there any moisture sensitivity or storage considerations?

A: Both parts carry MSL 1 rating, indicating unlimited shelf life with no special moisture control requirements during storage or handling.